What structure is formed from both fetal and maternal tissue?
A)chorion
B)placenta
C)yolk sac
D)amnion

Question

Quizplus · Accepted Answer

The placenta is formed from both fetal and maternal tissue. It is composed of tissue from the chorion (which is fetal tissue) and tissue from the endometrium of the uterus (which is maternal tissue). The placenta is responsible for exchanging gases, nutrients, and wastes between the mother and fetus, and also produces hormones that help regulate pregnancy. The yolk sac is an early structure that helps form blood cells and gives rise to some of the fetal membranes, but it is not formed from both fetal and maternal tissue. The amnion is a fetal membrane that surrounds the developing embryo and helps protect it from mechanical shocks, but it is also not formed from both fetal and maternal tissue.

What Structure Is Formed from Both Fetal and Maternal Tissue